Effect of sunlight exposure on cognitive function

Effect of sunlight exposure on cognitive func... [Environ Health. 2009] - PubMed - NCBI: Among depressed participants, a dose-response relationship was found between sunlight exposure and cognitive function, with lower levels of sunlight associated with impaired cognitive status (odds ratio = 2.58; 95% CI 1.43-6.69). While both season and sunlight were correlated with cognitive function, a significant relation remained between each of them and cognitive impairment after controlling for their joint effects.